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目的:观察根尖诱导成形术对牙根根管直径、牙根长度的影响。方法:临床选择单侧外伤露髓的6例年轻恒前牙,采用氢氧化钙糊剂进行根尖诱导,术后3年随访观察,定期拍摄X线片,比较根端1/3根管直径及牙根长度的变化。结果:根尖区骨质形成钙化桥是诱导成功的标志,根尖诱导术后的根管直径、牙根长度和对侧同名牙比较无统计学差异。结论:年轻恒牙在根尖诱导成形过程中,其根尖区发育和正常牙根趋于一致。
Objective: To observe the effect of apical inducement on root canal diameter and root length. Methods: 6 cases of young permanent anterior teeth of unilateral traumatic demyelination were selected clinically. The root apex was induced by calcium hydroxide paste. After 3 years of follow-up, X-ray films were taken regularly. And root length changes. Results: Calcified bridge of aponeurotic bone was a sign of successful induction. There was no significant difference in root canal diameter, root length and contralateral same name after apical induction. CONCLUSION: The young root tips during root apical induction have the same development and normal root tips.